I know this was a joke, but do you by any chance know any shorthand? I tried to teach myself Gregg here and there years ago, but it requires more dedication than I was willing to put in to become fluent.
Gregg is very much a "visible" sound system from a time when people just needed to capture the conversations and later expand back into text with the aid of a secretary. That is, if you didn't mutate your shorthand for your own purposes.
That being said, Aaron Hsu's handwriting is beautiful, but not my cup of tea for thinking on paper--my initial reaction to his scanned pages was unpleasant because it wasn't what I was used to from my own hands.